Is port 111 (RPCBind / Portmapper) dangerous?

Port 111 is classified as critical risk and should not be exposed to the public internet. It transmits data without encryption, making it vulnerable to eavesdropping and credential theft.

Should port 111 be open on my firewall?

No, port 111 should not be open to the public internet. Block it at the firewall and use encrypted alternatives such as SSH, SFTP, or HTTPS instead.

What transport protocol does port 111 use?

Port 111 (RPCBind / Portmapper) uses the TCP/UDP transport protocol and falls under the System & Infrastructure category.

:111 (TCP/UDP)

RPCBind / Portmapper

Critical Riesgo

TCP/UDP — System & Infrastructure

Resumen del puerto

Número de puerto 111

Nombre del servicio RPCBind / Portmapper

Protocolo de transporte TCP/UDP

Categoría System & Infrastructure

Riesgo de seguridad Critical

Rango de puertos Conocidos (0-1023)

Qué es el puerto 111?

RPCBind (also called portmapper) maps ONC RPC program numbers to the dynamic ports on which those services are listening. Exposing port 111 on the internet is a well-known critical vulnerability.

TCP/UDP System & Infrastructure De uso común

Consideraciones de seguridad

El puerto 111 (RPCBind / Portmapper) está clasificado como riesgo crítico. Este puerto no debe exponerse a internet público. El servicio transmite datos sin cifrado, haciéndolo vulnerable a escuchas, robo de credenciales y ataques de intermediario.

Recomendación: Bloquea este puerto en el firewall. Utiliza alternativas cifradas (SSH, SFTP, HTTPS) en su lugar.

Puertos relacionados — System & Infrastructure

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Términos relacionados

Bandwidth Latency Packet Loss Ping Throughput ASN